Low-Voltage, Precision, Single/Dual/Triple/Quad-Voltage μP Supervisors

Highly Accurate Three-Channel Voltage Monitoring Supervisory in Small SOT23

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The MAX16132–MAX16135 are low-voltage, ±1% accurate, single, dual, triple, and quad-voltage μP supervisors that monitor up to 4 system-supply voltages for undervoltage and overvoltage faults. The MAX16132–MAX16134 feature independent reset outputs, while the MAX16135 features dual reset outputs. For the MAX16132–MAX16134, a reset output asserts when the voltage at its corresponding input falls outside a factory-trimmed undervoltage and overvoltage window threshold. The reset is maintained for a minimum timeout period after voltage at the input falls within the factory-set window threshold. For the MAX16135, a reset output asserts when either, or both, of the corresponding inputs fall outside the factory-trimmed undervoltage and overvoltage window thresholds. See Selector Guide for available options. These integrated supervisory circuits significantly improve system reliability and reduce size compared to separate ICs or discrete components.

The MAX16132–MAX16135 are fixed-threshold devices. The nominal input voltage for any input is factory programmable from 1.0V to 5.0V, providing a wide range of threshold selections.The window threshold levels are factory programmable from ±4% to ±11%, with ±1% resolution and 0.25% or 0.50% hysteresis. The ±1% threshold accuracy over temperature and window threshold monitoring make these devices ideal for automotive ADAS applications.

The reset outputs are active-low, open-drain, and are guaranteed to be in the correct reset output logic state when VDD remains greater than 1.07V. All devices are offered with 23 reset timeout periods ranging from 20µs (min) to 1200ms (min). All reset outputs share the same factory-set reset timeout period.

The MAX16132–MAX16135 are available in a small 8-pin SOT23 package and specified over the automotive temperature range of -40°C to +125°C.

Design Solution: Gatekeeping Soldiers Protect ADAS Power Supply Voltage Integrity ›

Design Solution: Get More From Your System With a Cutting-Edge Supervisory IC ›

MAX16132, MAX16133, MAX16134, MAX16135: Simplified Block Diagram MAX16132, MAX16133, MAX16134, MAX16135: Simplified Block Diagram Enlarge+

Key Features

  • High Precision
    • ±1% Threshold Accuracy Over Temperature
  • Programmable OV Threshold: 104% to 111%
  • Programmable UV Threshold: 89% to 96%
  • Programmable Input Voltage from 1.0V to 5.0V
  • Low 15µA Supply Current
  • Quad-Input Monitor
  • 23 Programmable Reset Timeout Periods
  • Immune to Short Monitored Supply Transients
  • Guaranteed Correct Logic State Down to VDD = 1.07V
  • Open-Drain Outputs
  • Small SOT-23 Package
  • -40°C to +125°C Automotive Operating Temperature Range
  • AEC-Q100 Qualified (/V Part Numbers, Refer to Ordering Information)


  • ADAS
  • Multivoltage ASICs
  • Servers
  • Storage Equipment

See parametric specs for Supervisors (3 Monitored Voltages) (29)

Part NumberInterfaceReset Thresh.
Reset OuttRESETWatchdog FeatureSupervisor FeaturesReset Thresh. Accur.
(min)(@ +25°C)(max)(See Notes)
MAX16132 Factory Fixed
0 to 1.2
1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
Active Low
Open Drain
1ms to 15ms
15ms to 85ms
85ms to 300ms
300ms to 1s
No WatchdogOV/UV Monitoring147
$2.12 @1k
$2.18 @1k
$2.41 @1k
$2.24 @1k

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Tools & Models

  • MAX16133 IBIS Model
  • Request Reliability Report for: MAX16133 
    Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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